Tinman,
In the middle of your post you said "if all of the breaks (sic) on the trailer work, then there's nothing wrong with the trailer".
That's "mostly" correct. You still could have a failure/fault in your wiring between the trailer connector plug to the junction box (I assume your trailer has one) where the emergency brake 12VDC(+) connects.
__________________
2010 Laredo 245RL
2007 Dodge Ram 2500 CTD 4x4
Andersen Ultimate Gooseneck mount
|